Fluid tank and dispenser incorporating such a tank

Abstract

A fluid reservoir including a neck defining a wide opening that is closed by a dish in stationary and leaktight engagement with the neck. The dish has a main body in engagement with the neck and a stopper that is mounted on the main body in removable manner, the stopper being movable between a closed initial position in which the stopper is mounted on the main body in leaktight manner, and an open final position in which a feed opening is formed between the main body and the stopper.

1 . A fluid reservoir including a neck defining a wide opening that is closed by a dish in stationary and leaktight engagement with the neck, the reservoir being characterized in that the dish comprises a main body in engagement with the neck and a stopper that is mounted on the main body in removable manner, the stopper being movable between a closed initial position in which the stopper is mounted on the main body in leaktight manner, and an open final position in which a feed opening is formed between the main body and the stopper. 
     
     
         2 . A reservoir according to  claim 1 , wherein the stopper is separate from the main body in its open final position. 
     
     
         3 . A reservoir according to  claim 1 , wherein the feed opening is annular. 
     
     
         4 . A reservoir according to  claim 1 , wherein the stopper includes holder means that are suitable for coming into engagement with an external thrust element so as to move it from its closed initial position to its open final position. 
     
     
         5 . A reservoir according to  claim 1 , wherein the stopper is snap-fastened in the main body in its closed initial position. 
     
     
         6 . A reservoir according to  claim 1 , wherein the stopper in its closed initial position is formed integrally as a single piece with the main body. 
     
     
         7 . A reservoir according to  claim 1 , wherein the main body defines at least one annular sealing lip that projects upwards. 
     
     
         8 . A reservoir according to  claim 7 , wherein the stopper is mounted in the annular sealing lip in the closed initial position. 
     
     
         9 . A reservoir according to  claim 1 , wherein the stopper is movable axially in translation relative to the main body between its closed initial position and its open final position. 
     
     
         10 . A fluid dispenser comprising a dispenser member, such as a pump, associated with a fluid reservoir according to  claim 1 , the dispenser member including a thrust element that comes into engagement with the stopper so as to move it from its closed initial position to its open final position. 
     
     
         11 . A dispenser according to  claim 10 , wherein the thrust element holds the stopper in its open final position. 
     
     
         12 . A dispenser according to  claim 10 , wherein the dispenser member includes a chamber in which the fluid is put under pressure, the chamber including at least one inlet that communicates with the reservoir, the inlet being arranged around the thrust element. 
     
     
         13 . A dispenser according to  claim 10 , wherein the dispenser member forms at least one annular sealing groove in which an annular sealing lip that is formed by the dish is received.